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-rw-r--r--include/linux/nubus.h189
1 files changed, 121 insertions, 68 deletions
diff --git a/include/linux/nubus.h b/include/linux/nubus.h
index 11ce6b1117a8..6e8200215321 100644
--- a/include/linux/nubus.h
+++ b/include/linux/nubus.h
@@ -5,20 +5,36 @@
5 Originally written by Alan Cox. 5 Originally written by Alan Cox.
6 6
7 Hacked to death by C. Scott Ananian and David Huggins-Daines. 7 Hacked to death by C. Scott Ananian and David Huggins-Daines.
8 8*/
9 Some of the constants in here are from the corresponding 9
10 NetBSD/OpenBSD header file, by Allen Briggs. We figured out the
11 rest of them on our own. */
12#ifndef LINUX_NUBUS_H 10#ifndef LINUX_NUBUS_H
13#define LINUX_NUBUS_H 11#define LINUX_NUBUS_H
14 12
13#include <linux/device.h>
15#include <asm/nubus.h> 14#include <asm/nubus.h>
16#include <uapi/linux/nubus.h> 15#include <uapi/linux/nubus.h>
17 16
17struct proc_dir_entry;
18struct seq_file;
19
20struct nubus_dir {
21 unsigned char *base;
22 unsigned char *ptr;
23 int done;
24 int mask;
25 struct proc_dir_entry *procdir;
26};
27
28struct nubus_dirent {
29 unsigned char *base;
30 unsigned char type;
31 __u32 data; /* Actually 24 bits used */
32 int mask;
33};
34
18struct nubus_board { 35struct nubus_board {
19 struct nubus_board* next; 36 struct device dev;
20 struct nubus_dev* first_dev; 37
21
22 /* Only 9-E actually exist, though 0-8 are also theoretically 38 /* Only 9-E actually exist, though 0-8 are also theoretically
23 possible, and 0 is a special case which represents the 39 possible, and 0 is a special case which represents the
24 motherboard and onboard peripherals (Ethernet, video) */ 40 motherboard and onboard peripherals (Ethernet, video) */
@@ -27,10 +43,10 @@ struct nubus_board {
27 char name[64]; 43 char name[64];
28 44
29 /* Format block */ 45 /* Format block */
30 unsigned char* fblock; 46 unsigned char *fblock;
31 /* Root directory (does *not* always equal fblock + doffset!) */ 47 /* Root directory (does *not* always equal fblock + doffset!) */
32 unsigned char* directory; 48 unsigned char *directory;
33 49
34 unsigned long slot_addr; 50 unsigned long slot_addr;
35 /* Offset to root directory (sometimes) */ 51 /* Offset to root directory (sometimes) */
36 unsigned long doffset; 52 unsigned long doffset;
@@ -41,15 +57,15 @@ struct nubus_board {
41 unsigned char rev; 57 unsigned char rev;
42 unsigned char format; 58 unsigned char format;
43 unsigned char lanes; 59 unsigned char lanes;
44};
45 60
46struct nubus_dev {
47 /* Next link in device list */
48 struct nubus_dev* next;
49 /* Directory entry in /proc/bus/nubus */ 61 /* Directory entry in /proc/bus/nubus */
50 struct proc_dir_entry* procdir; 62 struct proc_dir_entry *procdir;
63};
64
65struct nubus_rsrc {
66 struct list_head list;
51 67
52 /* The functional resource ID of this device */ 68 /* The functional resource ID */
53 unsigned char resid; 69 unsigned char resid;
54 /* These are mostly here for convenience; we could always read 70 /* These are mostly here for convenience; we could always read
55 them from the ROMs if we wanted to */ 71 them from the ROMs if we wanted to */
@@ -57,79 +73,116 @@ struct nubus_dev {
57 unsigned short type; 73 unsigned short type;
58 unsigned short dr_sw; 74 unsigned short dr_sw;
59 unsigned short dr_hw; 75 unsigned short dr_hw;
60 /* This is the device's name rather than the board's. 76
61 Sometimes they are different. Usually the board name is
62 more correct. */
63 char name[64];
64 /* MacOS driver (I kid you not) */
65 unsigned char* driver;
66 /* Actually this is an offset */
67 unsigned long iobase;
68 unsigned long iosize;
69 unsigned char flags, hwdevid;
70
71 /* Functional directory */ 77 /* Functional directory */
72 unsigned char* directory; 78 unsigned char *directory;
73 /* Much of our info comes from here */ 79 /* Much of our info comes from here */
74 struct nubus_board* board; 80 struct nubus_board *board;
81};
82
83/* This is all NuBus functional resources (used to find devices later on) */
84extern struct list_head nubus_func_rsrcs;
85
86struct nubus_driver {
87 struct device_driver driver;
88 int (*probe)(struct nubus_board *board);
89 int (*remove)(struct nubus_board *board);
75}; 90};
76 91
77/* This is all NuBus devices (used to find devices later on) */ 92extern struct bus_type nubus_bus_type;
78extern struct nubus_dev* nubus_devices;
79/* This is all NuBus cards */
80extern struct nubus_board* nubus_boards;
81 93
82/* Generic NuBus interface functions, modelled after the PCI interface */ 94/* Generic NuBus interface functions, modelled after the PCI interface */
83void nubus_scan_bus(void);
84#ifdef CONFIG_PROC_FS 95#ifdef CONFIG_PROC_FS
85extern void nubus_proc_init(void); 96void nubus_proc_init(void);
97struct proc_dir_entry *nubus_proc_add_board(struct nubus_board *board);
98struct proc_dir_entry *nubus_proc_add_rsrc_dir(struct proc_dir_entry *procdir,
99 const struct nubus_dirent *ent,
100 struct nubus_board *board);
101void nubus_proc_add_rsrc_mem(struct proc_dir_entry *procdir,
102 const struct nubus_dirent *ent,
103 unsigned int size);
104void nubus_proc_add_rsrc(struct proc_dir_entry *procdir,
105 const struct nubus_dirent *ent);
86#else 106#else
87static inline void nubus_proc_init(void) {} 107static inline void nubus_proc_init(void) {}
108static inline
109struct proc_dir_entry *nubus_proc_add_board(struct nubus_board *board)
110{ return NULL; }
111static inline
112struct proc_dir_entry *nubus_proc_add_rsrc_dir(struct proc_dir_entry *procdir,
113 const struct nubus_dirent *ent,
114 struct nubus_board *board)
115{ return NULL; }
116static inline void nubus_proc_add_rsrc_mem(struct proc_dir_entry *procdir,
117 const struct nubus_dirent *ent,
118 unsigned int size) {}
119static inline void nubus_proc_add_rsrc(struct proc_dir_entry *procdir,
120 const struct nubus_dirent *ent) {}
88#endif 121#endif
89int get_nubus_list(char *buf); 122
90int nubus_proc_attach_device(struct nubus_dev *dev); 123struct nubus_rsrc *nubus_first_rsrc_or_null(void);
91/* If we need more precision we can add some more of these */ 124struct nubus_rsrc *nubus_next_rsrc_or_null(struct nubus_rsrc *from);
92struct nubus_dev* nubus_find_device(unsigned short category, 125
93 unsigned short type, 126#define for_each_func_rsrc(f) \
94 unsigned short dr_hw, 127 for (f = nubus_first_rsrc_or_null(); f; f = nubus_next_rsrc_or_null(f))
95 unsigned short dr_sw, 128
96 const struct nubus_dev* from); 129#define for_each_board_func_rsrc(b, f) \
97struct nubus_dev* nubus_find_type(unsigned short category, 130 for_each_func_rsrc(f) if (f->board != b) {} else
98 unsigned short type,
99 const struct nubus_dev* from);
100/* Might have more than one device in a slot, you know... */
101struct nubus_dev* nubus_find_slot(unsigned int slot,
102 const struct nubus_dev* from);
103 131
104/* These are somewhat more NuBus-specific. They all return 0 for 132/* These are somewhat more NuBus-specific. They all return 0 for
105 success and -1 for failure, as you'd expect. */ 133 success and -1 for failure, as you'd expect. */
106 134
107/* The root directory which contains the board and functional 135/* The root directory which contains the board and functional
108 directories */ 136 directories */
109int nubus_get_root_dir(const struct nubus_board* board, 137int nubus_get_root_dir(const struct nubus_board *board,
110 struct nubus_dir* dir); 138 struct nubus_dir *dir);
111/* The board directory */ 139/* The board directory */
112int nubus_get_board_dir(const struct nubus_board* board, 140int nubus_get_board_dir(const struct nubus_board *board,
113 struct nubus_dir* dir); 141 struct nubus_dir *dir);
114/* The functional directory */ 142/* The functional directory */
115int nubus_get_func_dir(const struct nubus_dev* dev, 143int nubus_get_func_dir(const struct nubus_rsrc *fres, struct nubus_dir *dir);
116 struct nubus_dir* dir);
117 144
118/* These work on any directory gotten via the above */ 145/* These work on any directory gotten via the above */
119int nubus_readdir(struct nubus_dir* dir, 146int nubus_readdir(struct nubus_dir *dir,
120 struct nubus_dirent* ent); 147 struct nubus_dirent *ent);
121int nubus_find_rsrc(struct nubus_dir* dir, 148int nubus_find_rsrc(struct nubus_dir *dir,
122 unsigned char rsrc_type, 149 unsigned char rsrc_type,
123 struct nubus_dirent* ent); 150 struct nubus_dirent *ent);
124int nubus_rewinddir(struct nubus_dir* dir); 151int nubus_rewinddir(struct nubus_dir *dir);
125 152
126/* Things to do with directory entries */ 153/* Things to do with directory entries */
127int nubus_get_subdir(const struct nubus_dirent* ent, 154int nubus_get_subdir(const struct nubus_dirent *ent,
128 struct nubus_dir* dir); 155 struct nubus_dir *dir);
129void nubus_get_rsrc_mem(void* dest, 156void nubus_get_rsrc_mem(void *dest, const struct nubus_dirent *dirent,
130 const struct nubus_dirent *dirent, 157 unsigned int len);
131 int len); 158unsigned int nubus_get_rsrc_str(char *dest, const struct nubus_dirent *dirent,
132void nubus_get_rsrc_str(void* dest, 159 unsigned int len);
133 const struct nubus_dirent *dirent, 160void nubus_seq_write_rsrc_mem(struct seq_file *m,
134 int maxlen); 161 const struct nubus_dirent *dirent,
162 unsigned int len);
163unsigned char *nubus_dirptr(const struct nubus_dirent *nd);
164
165/* Declarations relating to driver model objects */
166int nubus_bus_register(void);
167int nubus_device_register(struct nubus_board *board);
168int nubus_driver_register(struct nubus_driver *ndrv);
169void nubus_driver_unregister(struct nubus_driver *ndrv);
170int nubus_proc_show(struct seq_file *m, void *data);
171
172static inline void nubus_set_drvdata(struct nubus_board *board, void *data)
173{
174 dev_set_drvdata(&board->dev, data);
175}
176
177static inline void *nubus_get_drvdata(struct nubus_board *board)
178{
179 return dev_get_drvdata(&board->dev);
180}
181
182/* Returns a pointer to the "standard" slot space. */
183static inline void *nubus_slot_addr(int slot)
184{
185 return (void *)(0xF0000000 | (slot << 24));
186}
187
135#endif /* LINUX_NUBUS_H */ 188#endif /* LINUX_NUBUS_H */
generated by cgit v1.2.2 (git 2.25.0) at 2025-04-27 10:16:41 -0400